:root {
  --demo-nav-ink: #f8f4e8;
  --demo-nav-muted: rgba(248, 244, 232, 0.68);
  --demo-nav-line: rgba(248, 244, 232, 0.16);
  --demo-nav-panel: rgba(8, 12, 14, 0.84);
  --demo-nav-accent: #6de1a6;
  --demo-nav-cta: #f5c45b;
  --demo-focus-ring: #f5c45b;
  --demo-focus-shadow: 0 0 0 6px rgba(245, 196, 91, 0.18);
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 10px 12px;
  color: #07100d;
  background: var(--demo-nav-cta);
  border-radius: 8px;
  font-weight: 900;
  text-decoration: none;
  transform: translateY(-180%);
  transition: transform 160ms ease;
}

.skip-link:focus,
.skip-link:focus-visible {
  outline: 3px solid var(--demo-focus-ring);
  outline-offset: 4px;
  box-shadow: var(--demo-focus-shadow);
  transform: translateY(0);
}

.skip-link:focus,
:is(.game-app, .merge-app, .drift-app, .breaker-app, .sweep-app, .golf-app, .paint-app)
  :is(a[href], button, input, select, textarea, [tabindex]:not([tabindex="-1"])):focus {
  outline: 3px solid var(--demo-focus-ring);
  outline-offset: 4px;
  box-shadow: var(--demo-focus-shadow);
}

:is(.game-app, .merge-app, .drift-app, .breaker-app, .sweep-app, .golf-app, .paint-app)
  :is(a[href], button, input, select, textarea, [tabindex]:not([tabindex="-1"])):focus:not(:focus-visible) {
  outline-color: rgba(245, 196, 91, 0.72);
  box-shadow: var(--demo-focus-shadow);
}

:is(.demo-overview, .control-reference, .implementation-notes, .demo-built, .game-next-step):focus-within {
  outline: 2px solid var(--demo-focus-ring);
  outline-offset: 6px;
}

.sr-only {
  position: absolute;
  overflow: hidden;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

:is(.game-app, .merge-app, .drift-app, .breaker-app, .sweep-app, .golf-app, .paint-app)[tabindex="-1"] {
  scroll-margin-top: 16px;
}

:is(.game-app, .merge-app, .drift-app, .breaker-app, .sweep-app, .golf-app, .paint-app)[tabindex="-1"]:focus {
  outline: 3px solid var(--demo-focus-ring);
  outline-offset: -6px;
  box-shadow: inset 0 0 0 3px rgba(245, 196, 91, 0.14);
}

.game-app,
.merge-app,
.drift-app,
.breaker-app,
.sweep-app,
.golf-app {
  width: 100%;
  max-width: 100vw;
  grid-template-rows: auto auto auto auto auto minmax(0, 1fr) auto auto auto;
  overflow-x: hidden;
  overflow-y: auto;
}

.paint-app {
  --demo-focus-ring: var(--blue-600, #2f80ed);
  --demo-focus-shadow: 0 0 0 6px rgba(47, 128, 237, 0.18);
  width: 100%;
  max-width: 100vw;
  grid-template-rows: 56px auto 220px minmax(clamp(420px, calc(100vh - 372px), 680px), 1fr) 52px auto;
  overflow-x: hidden;
  overflow-y: auto;
}

:is(.game-app, .merge-app, .drift-app, .breaker-app, .sweep-app, .golf-app, .paint-app) .titlebar {
  max-width: 100vw;
  min-width: 0;
}

:is(.game-app, .merge-app, .drift-app, .breaker-app, .sweep-app, .golf-app, .paint-app)
  :is(.game-nav, .paint-nav) {
  max-width: 100%;
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

:is(.game-app, .merge-app, .drift-app, .breaker-app, .sweep-app, .golf-app, .paint-app)
  :is(.game-nav, .paint-nav)::-webkit-scrollbar {
  display: none;
}

:is(.game-app, .merge-app, .drift-app, .breaker-app, .sweep-app, .golf-app, .paint-app)
  :is(.game-nav a, .game-nav button, .paint-nav a, .paint-nav button) {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  min-height: 44px;
  line-height: 1;
  white-space: nowrap;
}

:is(.game-app, .merge-app, .drift-app, .breaker-app, .sweep-app, .golf-app, .paint-app)
  :is(.game-stage-wrap, .paint-shell, .canvas-shell, .stage-shell) {
  min-width: 0;
  max-width: 100%;
}

:is(.game-app, .merge-app, .drift-app, .breaker-app, .sweep-app, .golf-app, .paint-app)
  :is(.game-stage, .paint-stage, .canvas-stage) {
  max-width: 100%;
}

.paint-app.is-minimized {
  grid-template-rows: 56px auto 0 minmax(clamp(520px, calc(100vh - 152px), 760px), 1fr) 52px auto;
}

.demo-app-footer {
  display: grid;
  gap: 12px;
  padding: 22px 0 30px;
  background:
    linear-gradient(180deg, rgba(15, 26, 45, 0.94), rgba(8, 12, 14, 0.98)),
    #101827;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.demo-app-footer > :last-child {
  margin-bottom: 0;
}

.game-breadcrumb,
.demo-overview,
.control-reference,
.implementation-notes,
.game-next-step,
.demo-built {
  position: relative;
  z-index: 3;
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  color: var(--demo-nav-ink);
}

.game-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  min-height: 44px;
  color: var(--demo-nav-muted);
  font-size: 0.8rem;
  font-weight: 850;
}

.game-breadcrumb a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  color: var(--demo-nav-ink);
  text-decoration: underline;
  text-decoration-color: rgba(109, 225, 166, 0.58);
  text-underline-offset: 3px;
}

.game-breadcrumb span:last-child {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.demo-overview {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(260px, 0.9fr);
  gap: 14px;
  margin-bottom: 12px;
  padding: 14px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.075), rgba(255, 255, 255, 0.025)), var(--demo-nav-panel);
  border: 1px solid var(--demo-nav-line);
  border-radius: 10px;
  box-shadow: 0 16px 44px rgba(0, 0, 0, 0.22);
}

.demo-overview-copy {
  display: grid;
  gap: 8px;
  align-content: start;
}

.demo-overview h1,
.demo-overview h2 {
  margin: 0;
  color: var(--demo-nav-ink);
  font-size: clamp(1.55rem, 4vw, 3rem);
  line-height: 0.98;
}

.demo-overview p,
.demo-overview dd {
  margin: 0;
  color: var(--demo-nav-muted);
  font-size: 0.88rem;
  line-height: 1.45;
}

.demo-status-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 0;
}

.demo-status-list div {
  display: grid;
  gap: 3px;
  min-height: 68px;
  padding: 10px;
  background: rgba(248, 244, 232, 0.055);
  border: 1px solid rgba(248, 244, 232, 0.13);
  border-radius: 8px;
}

.demo-status-list dt {
  color: var(--demo-nav-cta);
  font-family: "JetBrains Mono", Consolas, monospace;
  font-size: 0.66rem;
  font-weight: 900;
  text-transform: uppercase;
}

.demo-status-list dd {
  color: var(--demo-nav-ink);
  font-weight: 850;
}

.demo-overview-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.demo-overview-actions a,
.demo-overview-actions button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 0 12px;
  color: var(--demo-nav-ink);
  background: rgba(248, 244, 232, 0.07);
  border: 1px solid rgba(248, 244, 232, 0.16);
  border-radius: 8px;
  cursor: pointer;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 900;
  text-decoration: none;
}

.demo-overview-actions button:first-of-type {
  color: #07100d;
  background: var(--demo-nav-cta);
  border-color: var(--demo-nav-cta);
}

.demo-overview-actions a:hover,
.demo-overview-actions button:hover:not(:disabled) {
  border-color: rgba(109, 225, 166, 0.66);
}

.demo-overview-actions button:disabled {
  color: var(--demo-nav-muted);
  background: rgba(248, 244, 232, 0.045);
  border-color: rgba(248, 244, 232, 0.12);
  cursor: not-allowed;
  opacity: 1;
}

.demo-overview-actions [aria-pressed="true"] {
  color: #07100d;
  background: var(--demo-nav-accent);
  border-color: var(--demo-nav-accent);
}

.demo-control-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 0;
}

.demo-control-list div {
  display: grid;
  gap: 4px;
  padding-top: 9px;
  border-top: 1px solid rgba(248, 244, 232, 0.13);
}

.demo-control-list dt {
  color: var(--demo-nav-accent);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.64rem;
  font-weight: 900;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.demo-accessibility-note {
  grid-column: 1 / -1;
  padding: 10px 12px;
  background: rgba(109, 225, 166, 0.08);
  border: 1px solid rgba(109, 225, 166, 0.18);
  border-radius: 8px;
}

.demo-accessibility-note strong {
  color: var(--demo-nav-ink);
}

.control-reference {
  display: grid;
  grid-template-columns: minmax(180px, 0.45fr) minmax(0, 1fr);
  gap: 12px;
  margin-bottom: 12px;
  padding: 12px 14px;
  background: rgba(8, 12, 14, 0.72);
  border: 1px solid var(--demo-nav-line);
  border-radius: 10px;
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.18);
}

.control-reference-heading {
  display: grid;
  gap: 4px;
  align-content: start;
}

.control-reference h2,
.control-reference h3 {
  margin: 0;
  color: var(--demo-nav-ink);
  line-height: 1.18;
}

.control-reference h2 {
  font-size: 1rem;
}

.control-reference h3 {
  font-size: 0.86rem;
}

.control-reference-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.control-reference-card {
  display: grid;
  gap: 8px;
  padding: 10px;
  background: rgba(248, 244, 232, 0.045);
  border: 1px solid rgba(248, 244, 232, 0.12);
  border-radius: 8px;
}

.shortcut-list {
  display: grid;
  gap: 6px;
  margin: 0;
  padding: 0;
  color: var(--demo-nav-muted);
  font-size: 0.82rem;
  line-height: 1.35;
  list-style: none;
}

.shortcut-list li {
  display: grid;
  grid-template-columns: minmax(120px, max-content) minmax(0, 1fr);
  gap: 8px;
  align-items: baseline;
}

.shortcut-list kbd {
  display: inline-flex;
  min-height: 24px;
  align-items: center;
  justify-content: center;
  padding: 2px 7px;
  color: #07100d;
  background: var(--demo-nav-cta);
  border: 1px solid rgba(255, 255, 255, 0.42);
  border-radius: 6px;
  font-family: "JetBrains Mono", Consolas, monospace;
  font-size: 0.72rem;
  font-weight: 900;
  white-space: nowrap;
}

.shortcut-list span {
  min-width: 0;
}

.game-next-step {
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  padding: 12px 14px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.075), rgba(255, 255, 255, 0.025)), var(--demo-nav-panel);
  border: 1px solid var(--demo-nav-line);
  border-radius: 10px;
  box-shadow: 0 16px 44px rgba(0, 0, 0, 0.26);
}

.game-next-step h2 {
  margin: 0 0 4px;
  color: var(--demo-nav-ink);
  font-size: 1rem;
  line-height: 1.15;
}

.game-next-step p {
  margin: 0;
  max-width: 48rem;
  color: var(--demo-nav-muted);
  font-size: 0.86rem;
  line-height: 1.4;
}

.next-step-kicker {
  display: block;
  margin-bottom: 3px;
  color: var(--demo-nav-accent);
  font-size: 0.66rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.demo-built {
  display: grid;
  gap: 10px;
  margin-bottom: 12px;
  padding: 14px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.025)), var(--demo-nav-panel);
  border: 1px solid var(--demo-nav-line);
  border-radius: 10px;
  box-shadow: 0 16px 44px rgba(0, 0, 0, 0.2);
}

.implementation-notes {
  display: grid;
  gap: 9px;
  margin-bottom: 12px;
  padding: 14px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.068), rgba(255, 255, 255, 0.024)), var(--demo-nav-panel);
  border: 1px solid var(--demo-nav-line);
  border-radius: 10px;
  box-shadow: 0 16px 44px rgba(0, 0, 0, 0.18);
}

.implementation-notes h2 {
  margin: 0;
  color: var(--demo-nav-ink);
  font-size: 1.06rem;
  line-height: 1.2;
}

.implementation-notes p {
  margin: 0;
  color: var(--demo-nav-muted);
  font-size: 0.9rem;
  line-height: 1.5;
}

.implementation-notes strong {
  color: var(--demo-nav-ink);
}

.demo-built h2 {
  margin: 0;
  color: var(--demo-nav-ink);
  font-size: 1.06rem;
  line-height: 1.2;
}

.demo-built ul {
  display: grid;
  gap: 7px;
  margin: 0;
  padding-left: 1.1rem;
  color: var(--demo-nav-muted);
  font-size: 0.88rem;
  line-height: 1.45;
}

.demo-built li::marker {
  color: var(--demo-nav-accent);
}

.demo-built .ownership-note {
  margin: 0;
  color: var(--demo-nav-muted);
  font-size: 0.84rem;
  line-height: 1.45;
}

.next-step-actions {
  display: flex;
  flex: 0 0 auto;
  flex-wrap: wrap;
  gap: 8px;
}

.next-step-actions a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 0 12px;
  color: var(--demo-nav-ink);
  background: rgba(248, 244, 232, 0.07);
  border: 1px solid rgba(248, 244, 232, 0.16);
  border-radius: 8px;
  font-weight: 900;
  text-decoration: none;
}

.next-step-actions a:first-child {
  color: #07100d;
  background: var(--demo-nav-cta);
  border-color: var(--demo-nav-cta);
}

.next-step-actions a:hover {
  border-color: rgba(109, 225, 166, 0.66);
}

.paint-app .game-next-step {
  background: #101827;
  border-color: rgba(255, 255, 255, 0.16);
}

.paint-app .demo-overview {
  background: #101827;
  border-color: rgba(255, 255, 255, 0.16);
}

.paint-app .control-reference {
  background: #101827;
  border-color: rgba(255, 255, 255, 0.16);
}

@media (max-width: 900px) {
  .paint-app > * {
    min-width: 0;
    max-width: 100%;
  }

  .paint-app :is(.game-breadcrumb, .demo-overview, .control-reference, .implementation-notes, .game-next-step, .demo-built) {
    width: calc(100vw - 24px);
    max-width: calc(100vw - 24px);
    justify-self: center;
  }

  .paint-app :is(.ribbon, .workspace, .statusbar) {
    width: 100%;
    max-width: 100vw;
    min-width: 0;
  }

  .paint-app :is(.ribbon-content, .canvas-scroll) {
    width: 100%;
    max-width: 100%;
    min-width: 0;
  }
}

@media (max-width: 760px) {
  :is(.game-app, .merge-app, .drift-app, .breaker-app, .sweep-app, .golf-app, .paint-app) .titlebar {
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 10px;
  }

  :is(.game-app, .merge-app, .drift-app, .breaker-app, .sweep-app, .golf-app, .paint-app)
    :is(.game-nav, .paint-nav) {
    width: 100%;
  }

  :is(.game-app, .merge-app, .drift-app, .breaker-app, .sweep-app, .golf-app, .paint-app) .game-stage-wrap {
    overflow: hidden;
  }

  body .paint-app {
    grid-template-rows: auto auto minmax(138px, 24dvh) minmax(clamp(400px, 60dvh, 560px), 1fr) auto auto;
  }

  body .paint-app.is-minimized {
    grid-template-rows: auto auto 0 minmax(clamp(520px, 68dvh, 680px), 1fr) auto auto;
  }

  .game-breadcrumb,
  .demo-overview,
  .control-reference,
  .implementation-notes,
  .game-next-step,
  .demo-built {
    width: min(100% - 24px, 1120px);
  }

  .demo-overview {
    grid-template-columns: 1fr;
    padding: 10px;
  }

  .demo-overview-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .demo-status-list,
  .demo-control-list {
    grid-template-columns: 1fr;
  }

  .control-reference {
    grid-template-columns: 1fr;
    padding: 10px;
  }

  .control-reference-grid {
    grid-template-columns: 1fr;
  }

  .shortcut-list li {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .game-next-step {
    align-items: stretch;
    flex-direction: column;
    gap: 10px;
    padding: 10px;
  }

  .next-step-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .next-step-actions a {
    min-height: 44px;
  }
}

@media (max-width: 430px) {
  :is(.game-app, .merge-app, .drift-app, .breaker-app, .sweep-app, .golf-app, .paint-app) .game-stage {
    width: min(100%, calc(100vw - 16px));
  }

  .game-breadcrumb {
    font-size: 0.74rem;
  }

  .game-next-step p {
    display: none;
  }

  .next-step-actions {
    grid-template-columns: 1fr;
  }

  .demo-overview-actions {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .skip-link,
  .demo-overview-actions a,
  .demo-overview-actions button,
  .next-step-actions a {
    transition: none !important;
  }
}